anderson



JW'MNDERSUNSWumEXHAUSTING .VENTILA'PURS Y jw- MHMNEYTUPS.

@met grans-@simi @wie JAMESW. :C: ANDERSON, NEW. YORK, N. Y.. ASSIGNOR TO HENRY i DEMAREST, THE SAME PLACE.

Leners Patent No. 13,280, @zaad Januarym, 1ste. v

BXHAUSTING-VENTILATOR AND GHIMNEY-GOWL.

titte .tlgehnle moet tu iu titte-Simeri attt mit uniting putt af tige smite.

To ALL WHoM 1T MAY concerns:

Be it known that I, J. W. C. ANDERSON, of the city and county of New York, in the State oENew York, have invented certain new and useful Improvements in Exhausting-Ventilators and Chimney-Tops; and I do hereby declare that'the following is a full and exact description thereof. i Thep'rineiples on which my invention operates are old and weli'known, but the construction and arrangement ofthe Aparts of my vcntilator'involve novelties which are of much importance in practice.'

I will first describe what I consider the best'menns of carrying out my invention, and will afterwards designate the points which I believeto be new. The accompanying drawings form a part of this specification,

Figure 1 is a side view. l Q Figure-2 is a central vertical section.

Figure 3 is a view of the entire ventilator from below. Figure 4 is a horizontalseetion on the line S S in iig. 2. Similar letters of reference indicate like parts in all the figures. A is the cylindrical-casing, which forms` the main upright pipe or. body of my ventilator. Its lower end is p. flanged, squared, or otherwise shaped to be connected to thehuilding` or to the brick-work on any approved plan. The upper'edge of the body A is .turned outward, or ilnnged, as indicated by a. B is the lower inclined portion. It is the frustum'of a cone, and is formed of sheet metal, preferably galvanized iron, like the other parts. It is attached'to the body b elow the ilange a, as represented. C is a horizontal sheetwhich connects the lower edge ot' the frustum B to the body A, as represented. I make holes, D', in the horizontal plate C, and make corresponding holes, E, in the body A abo've the horizontal plate C.l vG is the upperinclin-ed portion. It is a. complete hollow conc, mounted in the position represented by websor connections g. A little below the horizontal plate C, I form holes, H, in thebody A. To these holes I connect, on the outside of the body, short pipes, I, presenting their open ends downward, as represented.

' The junction of the material in forming these several parts and securingr them together may be made by any ordinary means known to sheet-metal workers, but I prefer .torboth rivet and solder. I do not connue k myself to galvanized sheet iron as a material. I

When a high wind with rain or snow strikes the 'lower incline B, and is deflected upward in the ordinary manner to curl over the top and form a partial vacuum there, the rain or snow is arrested by the flange a, and

only the air is allowed to flow upward further. This ange a, therefore, performs an important function in its construction and arrangement relatively to the other parts. The pipes I, as arranged, receive a constant`current of air, and discharge it inclined upward into the body A. These currents have the efect to increase the exhaustiveaction ofthe ventilator-1er chimney-cap. The fact that the outer mouths of the pipes I are presented horizontally goes ferito-prevent the reception of rain and snow. The lower' incline B is braced and stiifened very eifectually by the horizontal plate C, and .the holes D E, Aas arranged, operate in somewhat the same manner as the pipes I, and 'receive a constant current of air aud discharge it inclined upward into thebody A.

These currents have thc eifect to increase the exhaustive Aaction of the ventilator or chimney-cup. The heri-` aantal position ofthe plate C forbids the entrance of any considerable quantities of rainor snow through the holes D, even in strong winds, and the small quantities of rain or snow rising through the holes D are di'used in the space or chamber above, and do not flow through the next holes E. v

One of the principal uses for my invention, as in fact for any exhausting-ventilator, is on the top of chimneys where from any cause the natural draught is found to be insuiicient. I have tested my improved ventilator in this situation with success, and also as a general exhausting-ventilator for crowded halls. Calvary church, in this city, is now'provided with a number, the escape of air from the same being controlled by ordinary b valves at the point of exit from the interior 'of the church.

Having now fully described my invention, 'what I claim as new in yezhausting-vontilators and window-caps, and desire to secure by Letters Patent, is as follows:

1. Iclam the collar or water-stop a, arranged relatively to the cone B and body A, substantially as and Afor the purpose within set forth. y

v 2. I claim the within-described construction and arrangement of the bo'dy A, incline B, connection 0,'.and holes D and E, as and for thepurpeses herein specified. JAMES W; C. ANDERSON.

Witnesses:

'Wc o' D, l l i O. 0. Lmnes. 

